freebsd.{libc,compat,include}: use no-libs stdenv

Previously, an attribute named isStatic did this, but this was lost in a
refactor. Revive it and rename it to noLibc to be more clear about its
intended use.

pkgs/os-specific/bsd/freebsd/pkgs/csu.nix

@@ -12,7 +12,7 @@
 }:
 
 mkDerivation {
-  isStatic = true;
+  noLibc = true;
   path = "lib/csu";
   extraPaths = [
     "lib/Makefile.inc"

pkgs/os-specific/bsd/freebsd/pkgs/include/package.nix

@@ -7,7 +7,7 @@
 }:
 
 mkDerivation {
-  isStatic = true;
+  noLibc = true;
   path = "include";
 
   extraPaths = [

pkgs/os-specific/bsd/freebsd/pkgs/libc/package.nix

@@ -21,7 +21,7 @@
 }:
 
 mkDerivation {
-  isStatic = true;
+  noLibc = true;
   pname = "libc";
   path = "lib/libc";
   extraPaths =

pkgs/os-specific/bsd/freebsd/pkgs/mkDerivation.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   stdenvNoCC,
+  stdenvNoLibs,
   versionData,
   writeText,
   patches,
@@ -21,7 +22,13 @@
 lib.makeOverridable (
   attrs:
   let
-    stdenv' = if attrs.noCC or false then stdenvNoCC else stdenv;
+    stdenv' =
+      if attrs.noCC or false then
+        stdenvNoCC
+      else if attrs.noLibc or false then
+        stdenvNoLibs
+      else
+        stdenv;
   in
   stdenv'.mkDerivation (
     rec {